Option to place a project under multiple categories

[agjtimmers]

I would like to categorize the project Fishing in the Past under both History and Ecology. Is this possible and how would I do that?

[leonardovida]

At the moment it is not possible. We might decide to add a new column to the csv called something like alternative_categories to allow for multiple categorization. However, a main category always need to be selected.

[J535D165]

I like the idea of additional categories. I would use extra_categories instead of alternative.